This simplifies some code which had StringRefs to begin with, and
makes other code more complicated which had const char* to begin
with.
In the end, I think this makes for a more idiomatic and platform
agnostic API. Not all platforms launch process with null terminated
c-string arrays for the environment pointer and argv, but the api
was designed that way because it allowed easy pass-through for
posix-based platforms. There's a little additional overhead now
since on posix based platforms we'll be takign StringRefs which
were constructed from null terminated strings and then copying
them to null terminate them again, but from a readability and
usability standpoint of the API user, I think this API signature
is strictly better.
llvm-svn: 334518
This breaks the OpenFlags enumeration into two separate
enumerations: OpenFlags and CreationDisposition. The first
controls the behavior of the API depending on whether or not
the target file already exists, and is not a flags-based
enum. The second controls more flags-like values.
This yields a more easy to understand API, while also allowing
flags to be passed to the openForRead api, where most of the
values didn't make sense before. This also makes the apis more
testable as it becomes easy to enumerate all the configurations
which make sense, so I've added many new tests to exercise all
the different values.
llvm-svn: 334221
As noted by Adrian on llvm-commits, PrintHTMLEscaped and PrintEscaped in
StringExtras did not conform to the LLVM coding guidelines. This commit
rectifies that.
llvm-svn: 333669
We've been running doxygen with the autobrief option for a couple of
years now. This makes the \brief markers into our comments
redundant. Since they are a visual distraction and we don't want to
encourage more \brief markers in new code either, this patch removes
them all.
Patch produced by
for i in $(git grep -l '\\brief'); do perl -pi -e 's/\\brief //g' $i & done
Differential Revision: https://reviews.llvm.org/D46290
llvm-svn: 331272
We have a few functions that virtually all command wants to run on
process startup/shutdown. This patch adds InitLLVM class to do that
all at once, so that we don't need to copy-n-paste boilerplate code
to each llvm command's main() function.
Differential Revision: https://reviews.llvm.org/D45602
llvm-svn: 330046
Summary:
The option is helpful for large projects where it's not feasible to specify sources which
user would like to see in the report. Instead, it allows to black-list specific sources via
regular expressions (e.g. now it's possible to skip all files that have "test" in its name).
This also partially fixes https://bugs.llvm.org/show_bug.cgi?id=34277
Reviewers: vsk, morehouse, liaoyuke
Reviewed By: vsk
Subscribers: kcc, mgorny, llvm-commits
Differential Revision: https://reviews.llvm.org/D43907
llvm-svn: 329581
Summary:
Previous code hangs indefinitely when trying to iterate through a
symbol link file that points to an non-exist directory. This change
fixes the bug to make the addCollectedPath function exit ealier and
print out correct warning messages.
Patch by Yuke Liao (@liaoyuke).
Reviewers: Dor1s, vsk
Reviewed By: vsk
Subscribers: bruno, mgrang, llvm-commits
Differential Revision: https://reviews.llvm.org/D44960
llvm-svn: 329338
Summary: Existing version doesn't work on Windows as it always prints 0.00.
Reviewers: Dor1s
Reviewed By: Dor1s
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D42767
llvm-svn: 323923
Summary:
This speeds up export "summary-only" execution by an order of magnitude or two,
depending on number of threads used for prepareFileReports execution.
Also includes minor refactoring for splitting render of summary and detailed data
in two independent methods.
Reviewers: vsk, morehouse
Reviewed By: vsk
Subscribers: llvm-commits, kcc
Differential Revision: https://reviews.llvm.org/D42000
llvm-svn: 322397
Summary:
Local testing has demonstrated a great speed improvement, compare the following:
1) Existing version:
```
$ time llvm-cov show -format=html -output-dir=report -instr-profile=... ...
The tool has been launched: 00:00:00
Loading coverage data: 00:00:00
Get unique source files: 00:00:33
Creating an index out of the source files: 00:00:34
Going into prepareFileReports: 00:00:34
Going to emit summary information for each file: 00:28:55 <-- 28:21 min!
Going to emit links to files with no function: 00:28:55
Launching 32 threads for generating HTML files: 00:28:55
real 37m43.651s
user 112m5.540s
sys 7m39.872s
```
2) Multi-threaded version with 32 CPUs:
```
$ time llvm-cov show -format=html -output-dir=report -instr-profile=... ...
The tool has been launched: 00:00:00
Loading coverage data: 00:00:00
Get unique source files: 00:00:38
Creating an index out of the source files: 00:00:40
Going into prepareFileReports: 00:00:40
Preparing file reports using 32 threads: 00:00:40
# Creating thread tasks for the following number of files: 16422
Going to emit summary information for each file: 00:01:57 <-- 1:17 min!
Going to emit links to files with no function: 00:01:58
Launching 32 threads for generating HTML files: 00:01:58
real 11m2.044s
user 134m48.124s
sys 7m53.388s
```
Reviewers: vsk, morehouse
Reviewed By: vsk
Subscribers: Dor1s, llvm-commits, kcc
Differential Revision: https://reviews.llvm.org/D41206
llvm-svn: 321871
Summary:
That allows to get the same data as produced by "llvm-cov report",
but in JSON format, which is better for further processing by end users.
Reviewers: vsk
Reviewed By: vsk
Differential Revision: https://reviews.llvm.org/D41085
llvm-svn: 320435
We've worked around bugs in the frontend by ignoring the count from
wrapped segments when a line has at least one region entry segment.
Those frontend bugs are now fixed, so it's time to regenerate the
checked-in covmapping files and remove the workaround.
llvm-svn: 317761
This class was split between libIR and libSupport, which breaks under
modular code generation. Move it into the one library that uses it,
ProfileData, to resolve this issue.
llvm-svn: 317366
We need to use a stable sort on instantiation and expansion sub-views to
produce consistent output. Fortunately, we've gotten lucky and the tests
have checks for the stable order.
This is needed to unblock D39245. Once that lands, we'll have better
test coverage for sort non-determinism.
llvm-svn: 316490
LineCoverageIterator makes it easy for clients of coverage data to
determine line execution counts for a file or function. The coverage
iteration logic is tricky enough that it really pays not to have
multiple copies of it. Hopefully having just one implementation in LLVM
will make the iteration logic easier to test, reuse, and update.
This commit is NFC but I've added a unit test to go along with it just
because it's easy to do now.
llvm-svn: 316141
llvm-cov tends to highlight too many regions because its policy is to
highlight all region entry segments. This can look confusing to users:
not all region entry segments are interesting and deserve highlighting.
Emitting these highlights only when the region count differs from the
line count is a more user-friendly policy.
llvm-svn: 316109
Instead of copying around the wrapped segment and the list of line
segments, just pass a reference to a LineCoverageStats object. This
simplifies the interface. It also makes an upcoming change to suppress
distracting highlights possible.
llvm-svn: 316108
llvm-cov typically doesn't highlight gap segments, but it should if the
gap occurs after an uncovered region in order to preserve continuity.
llvm-svn: 316107
In r315960, I accidentally assumed that the first line segment is
guaranteed to be the non-gap region entry segment (given that one is
present). It can actually be any segment on the line, and the test I
checked in demonstrates that.
llvm-svn: 315963
Gap areas make it possible to correctly determine when to use counts
from deferred regions. Before gap areas were introduced, llvm-cov needed
to use a heuristic to do this: it ignored counts from segments that
start, but do not end, on a line. This heuristic breaks down on a simple
example (see PR34962).
This patch removes the heuristic and picks counts from any region entry
segment which isn't a gap area.
llvm-svn: 315960
There were two copies of the logic needed to construct a line stats
object for each line in a range: this patch brings it down to one. In
the future, this will make it easier for IDE clients to display coverage
in-line in source editors. To do that, we just need to move the new
LineCoverageIterator class to libCoverage.
llvm-svn: 315789
Summary:
Documentation says that user can specify sources for both "show" and
"report" commands. "Show" command respects specified sources, but "report" does
not. It is useful to have both "show" and "report" generated for specified
sources. Also added tests to for both commands with sources specified.
Reviewers: vsk, kcc
Reviewed By: vsk
Differential Revision: https://reviews.llvm.org/D38860
llvm-svn: 315685
Before this change using any of the -name*= command line options with an output
directory would result in a single file (functions.txt/functions.html)
containing the coverage for those specific functions. Now you get the same
directory structure as when not using any -name*= options.
Differential Revision: https://reviews.llvm.org/D38280
llvm-svn: 314396
Before this change using any of the -name*= command line options with an output
directory would result in a single file (functions.txt/functions.html)
containing the coverage for those specific functions. Now you get the same
directory structure as when not using any -name*= options.
Differential Revision: https://reviews.llvm.org/D38280
llvm-svn: 314310
llvm-cov's report mode does not print any output when -show-functions is
specified and no source files are specified. This can be surprising, so
the tool should at least print out an error message when this happens.
rdar://problem/34636859
llvm-svn: 314175
Summary:
Sanitizer blacklist entries currently apply to all sanitizers--there
is no way to specify that an entry should only apply to a specific
sanitizer. This is important for Control Flow Integrity since there are
several different CFI modes that can be enabled at once. For maximum
security, CFI blacklist entries should be scoped to only the specific
CFI mode(s) that entry applies to.
Adding section headers to SpecialCaseLists allows users to specify more
information about list entries, like sanitizer names or other metadata,
like so:
[section1]
fun:*fun1*
[section2|section3]
fun:*fun23*
The section headers are regular expressions. For backwards compatbility,
blacklist entries entered before a section header are put into the '[*]'
section so that blacklists without sections retain the same behavior.
SpecialCaseList has been modified to also accept a section name when
matching against the blacklist. It has also been modified so the
follow-up change to clang can define a derived class that allows
matching sections by SectionMask instead of by string.
Reviewers: pcc, kcc, eugenis, vsk
Reviewed By: eugenis, vsk
Subscribers: vitalybuka, llvm-commits
Differential Revision: https://reviews.llvm.org/D37924
llvm-svn: 314170
Passing "-dump" to llvm-cov will now print more detailed information
about function hash and counter mismatches. This should make it easier
to debug *.profdata files which contain incorrect records, and to debug
other scenarios where coverage goes missing due to mismatch issues.
llvm-svn: 313853
After clang started emitting deferred regions (r312818), llvm-cov has
had a hard time picking reasonable line execuction counts. There have
been one or two generic improvements in this area (e.g r310012), but
line counts can still report coverage for whitespace instead of code
(llvm.org/PR34612).
To fix the problem:
* Introduce a new region kind so that frontends can explicitly label
gap areas.
This is done by changing the encoding of the columnEnd field of
MappingRegion. This doesn't substantially increase binary size, and
makes it easy to maintain backwards-compatibility.
* Don't set the line count to a count from a gap area, unless the count
comes from a wrapped segment.
* Don't highlight gap areas as uncovered.
Fixes llvm.org/PR34612.
llvm-svn: 313597
* Fix an unsigned integer overflow in the logic that computes the
number of uncovered lines in a function.
* When aggregating region and line coverage summaries, take into account
that different instantiations may have a different number of regions.
The new test case provides test coverage for both bugs. I also verified
this change by preparing a coverage report for a stage2 build of llc --
the new assertions should detect any outstanding over-counting bugs.
Fixes PR34613.
llvm-svn: 313417
There's a bug in the way the line and region summary objects are merged.
It would have been less likely to occur if those objects kept some data
private.
llvm-svn: 313416
The "NotCovered" fields in the region and line summary structs are
redundant. We should remove them to make the code clearer.
As a follow-up, the "NotCovered" entries should be removed from the
reports as well.
llvm-svn: 313415
Summary:
Change the type of the Redirects parameter of llvm::sys::ExecuteAndWait,
ExecuteNoWait and other APIs that wrap them from `const StringRef **` to
`ArrayRef<Optional<StringRef>>`, which is safer and simplifies the use of these
APIs (no more local StringRef variables just to get a pointer to).
Corresponding clang changes will be posted as a separate patch.
Reviewers: bkramer
Reviewed By: bkramer
Subscribers: vsk, llvm-commits
Differential Revision: https://reviews.llvm.org/D37563
llvm-svn: 313155
Region coverage is difficult to explain without going deep into how
coverage is implemented. Instantiation coverage is easier to explain,
but probably not useful in most cases (templates don't exist in C, and
most C++ code contains relatively few templates).
This patch adds the options "-show-region-summary" and
"-show-instantiation-summary" to allow hiding those columns.
"-show-instantiation-summary" is turned off by default.
llvm-svn: 312969
Zachary Turner